hcg unit mcg iu

My wife and I are doing a round of IUI this month, so she was recently prescribed Ovidrel (brand name HCG). The dose is 250 mcg, and the cost will be $75. I'm guessing that's way overpriced, given that I take compounded HCG that costs $75 for 11,000 IUs. So, I'm thinking of just giving her a...